
A metaphosphate ion is an
oxyanion that has the empirical formula . It was first postulated in 1955 but was not observed until 1979, when it was detected by mass spectrometry. Metaphosphate is an intermediate in the hydrolysis of
phosphate esters but it is difficult to isolate, as it readily hydrolyses to from a
dihydrogen phosphate
Dihydrogen phosphate is an inorganic ion with the formula 2PO4sup>−. Phosphates occur widely in natural systems. Perhaps the most common salt of dihydrogen phosphate is sodium dihydrogen phosphate. It is used in animal feed, fertilizer, ...
ion () and tends to self-react in the absence of water to form rings or infinite chains: These species are also called metaphosphates and are generally stable, with some such as
sodium trimetaphosphate being produced on an industrial scale.
Metaphosphates can be used as an alternative of white phosphorus in organic syntheses.
See also
*
Sodium trimetaphosphate
*
Sodium hexametaphosphate
References
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Metaphosphates
Phosphorus oxyanions